<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>登录</title>
</head>
<body>
    <h1>登录</h1>
  <form method="POST" action="/login">
    用户：<input type="text" name="username"></input> <br>
    密码：<input type="password" name="password"></input> <br>
    <button type="submit">登录</button>
  </form>
</body>
</html>